COMPUTER SYSTEM

PROBLEM TO BE SOLVED: To carry out a load request to a memory system in an out-of-order manner in relation to all instructions in an instruction window and to carry out a store request in an in-order manner in relation to all the instructions in the instruction window. SOLUTION: This computer system is provided with : an address collision means for detecting whether address collision and writing pending are present among a plurality of instructions or not to carry out a load request when they are not detected; and a load/store unit 205 including an address path 220 for controlling addresses related to a plurality of the instructions to provide the addresses to the memory system in response to the output of the address collision means, and a data path 210 for aligning load and store data from the memory system to return them. COPYRIGHT: (C)2005,JPO&NCIPI